Improvement in flaring-tools for glassware



LCHALLINoR. FLARING-TOULS FER GLASSWARE.

Patented April 11, 187e;

Wmm.

N4 PETERS. PHOTO-LITHOGRPNER. WASHINGTON. D C

UNITED STATES PATENT OFFICE;

DAVID CHALLINOR, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN FLARING-TOLS FOR GLASSWARE.

Specification forming part of Letters Patent No. 175,851, dated Aprill1, 1876; application filed March 27, w76.

To all whom it may concern Be it known that I, DAVID UHALLINOR, ofPittsburg, county of Allegheny, State of Pennsylvania, have invented ordiscovered a new and useful Improvement in Flaring-Tool for Glassware;and I do hereby declare the following to be a full, clear, concise, andexact description thereof, reference being had to the accompanyingdrawing, making a part of this specification, in which-like lettersindicating like parts-#- Figure 1 is a perspective view of my 1mprovedflaringtool, and Fig. 2 is a reduced elevation of the same, attached toa post in a fixed position for use.

My invention relates to a tool for flaring the upper openends oflamp-chimneys, and the open ends of smoke-bells, or other hollowopen-ended articles of glassware wherein an enlarged flaring orbell-mouth end is desired 5 and it differs from similar tools heretoforein use in employing revolving surfaces arranged in a xed head with theirworkingfaces along the lines of contact, angularly arranged withreference tothe axial line of the tool or of the line of feed.

The lixed head consists of a base block or frame, a, and an end bearingor tip, b, both affixed rigidly to a stem, c, which latter, beingprolonged, as at c', is employed as a means of fastening the tool in afixed position to any suitable post or support, d. Between the tip b andbase a, and with an end bearing in each, so as to rotate freely on theiraxes, I arrange a series of two or more friction-rollers, c. Theserollers are preferably made with flaring` bases, as at c', and with thebase ends of their axes at a greater distance from the axial line of thetool than the opposite ends, so that the exterior or working faces shallbe not only inclined like the up and down sides of a cone, but shallalso flare outwardly at or near the base to a bell-mouth shape. The tipdis designed to enter the hollow of the glass.article to be liarcdwithout coming in contact therewith. Then as the glass article,previously hot or heated to the .proper temperature, is passed over oronto the tool, the inside of its open end comes in contact with therollers c. The glass article, being held in a snap, is at the same timerapidly rotated and pressed forward, and thereby the rollers c arecaused to revolve on theiraxes, so as to expand or iiare out the openend .Without frictional contact therewith, and consequently withoutimpairing its smooth inner surface, and also without chilling it so asto prevent the flaring effect desired. The glass article is pressedforward and rotated till its end comes even with the base ends of therollers c or till the desired amount of fiare is secured.

I do not limit myself' to any particular shape of rollers, since, for aconical flare, cylindrical rollers, arranged angularly with the axialline of the tool, may be substituted; and for some purposes conicalrollers or bell-mouthed rollers may be employed with their axial linesparallel with the stem. In this respect it is only essential that theexterior working-faces or lines of bite or contact with the interiorsurface of the glass should be inclined to the axial line of the tool,or to the line in which the glass article is fed to 'the tool, Whethersuch inclination be secured by the shape of the roller or by theinclination of its axis, or partly by each. Noris it essential that therollers should be supported at both ends, since, by the exercise ofordinary mechanical skill, long bearings can be made at either end whichwill support them with sufficient firmness and in the proper positionfor accomplishing the end in view.

I claim herein as my invention- 1. A flaring-tool for glassware,consisting of a fixed non-rotating head or frame and a series of two ormore rollers, arranged in such head or frame so as to revolve each onits own axis, and with its exterior working-face set at an angle to theaxial line of the head or frame, substantially as set forth.

2. The non-rotating base a, tip b, and stem c, carrying and supporting aseries of two or more revolving rollers, c, substantially as and for thepurposes set fort In testimony whereof I have hereunto set my hand.

DAVID CHALLINOR. Witnesses OLAUDIUs L. PARKER, JN0. A. WILSON.

